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EBOM (Anonidium mannii)
Nom commercial
Ebom
Nom scientifique (avec auteur)
Anonidium mannii Engl. et Diels
Famille
ANNONACEAE
Noms communs (pays)
Ogedegbo (Nigeria); Ewura-igbo (Nigeria); Ebom (Gabon); bob (Congo); Ombé (Cameroon); Mbé (Cameroon); Ebom (Cameroon)
Synonymes du nom scientifique (avec auteurs)
Uvaria crassipetala Engler ex Engler & Diels; Uvaria crassipetala Engl. ex Engl. & Diels; Annona mannii Oliv.
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 23 to 30 m, with diameters up to 100 cm. The bole is straight, unbuttressed, and may be up to 20 m in length.
Habitat naturel
Anonidium mannii occurs in dense rain forests.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Non-vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel Axial parenchyma scalariform. Non-crystals in axial parenchyma cells. 3 to 4 cells per parenchyma strand. Axial parenchyma bands over 4 per mm. Rays less than 4 per mm (rare). Larger rays width 0. 1 mm or more and 2 mm or more in height. Rays non-storied. Larger rays more than 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood is whitish, turning a dirty yellow on exposure with time, it is not demarcated.
Grain
The grain is slightly but systematically interlocked.
Texture
This wood has a somewhat coarse texture.
Durabilité naturelle
Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Sensible to termites attack. Heartwood is sensible to Lyctus attacks.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
Tensions internes de croissance
No growth stresses are reported in this species.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.32
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.34
Défauts dus au séchage
Ease of Drying: It is reported to be moderately difficult to dry. Drying Defects: Slight warping and checking. Kiln Schedules: Air seasoning before kiln drying is recommended.
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
434
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
270
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
27
Dureté Janka (latérale) 12%TH (kgf)
139
Dureté Janka (extrémités) 12%TH (kgf)
217
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Not suitable for veneering.
Placage tranche
Not suitable for veneering.
Effet d'émoussement
Slight blunting effect; ordinary tools can be used for sawing and machining.
Usinage
Machining of this species is reportedly easy.
Rabotage
Easy; no particular problems.
Moulurage
Easy; no particular problems.
Perçage
Easy; no particular problems.
Mortaisage
Easy; no particular problems.
Clouage
Easy to perform but low nails holding.
Collage
Glues well if basic gluing technical rules are followed.
Ponçage
Particular care is needed to avoid woolly aspect of the surface.
Polissage
Needs pre-coating.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
PLYWOOD AND VENEER, SPORTS, PACKING, OTHER AND MUSICAL INSTRUMENTS, handicrafts, particleboard, paper
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
SPORTS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Panneaux de particules
- 80 - Estudio Integral de la Madera para Construcción
Papier
- 82 - Compilation of Data on the Mechanical Properties of Foreign woods (Part 2) Central and South America.
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